On the Alfa Romeo Bulletin Board, we are researching the chassisnumbers of the Alfa Romeo 1750/2000 GTAm. Here is the status as of the 12th of January 2011. If you have any information to add or have any comments, please feel free to do so.

Definition:But first an addition to definition of what a GTAm is. As already said the GTAm was an Alfa Romeo 1750 GTV that was converted by Autodelta to GTAm specification. The homologation papers specify what changes could be made. Along with the type 1750 GTV USA (105.51) some type 1750 GTV EU (105.44) have also been converted. The same goes for some type 2000 GTV’s. Besides that, UlrichGTA told me that in Germany some GT 1300 Junior cars have been converted to GTAm because the GT 1300 Junior was lighter. Difficulty with the GTAm is, that it never had a unique type- and chassisnumber. This is unlike the type GTA (105.32 LHD and 105.34 RHD) and type GTA 1300 Junior (105.59).

Variants:Then there are variants within the different types: - new cars from the production line converted to GTAm spec's by Autodelta as Autodelta works cars- new cars from the production line converted to GTAm spec's by Autodelta as Autodelta customer cars- existing cars converted to GTAm spec's by Autodelta as Autodelta customer cars- new or existing cars converted to GTAm spec's by other tuners/teams with Autodelta parts like the Balduzzi cars (Tony Adriaensens mentions this in his book) - new or existing bodyshells with or without a chassisnumber that were equipped with Autodelta parts (for example from wrecked cars) - other variants on this theme in various stages of tune

A lot of GTAm's will have been updated during and after their racing life, engines and gearboxes were swapped, they have been restored, etc ..... And some of these cars had great palmares while others were less fortunate.

Copies:Besides that, there are a lot of copies with various stages of tune with less or more original GTAm parts. Have a look around on alfabb and you will see a lot of GTV's being changed into GTAm copies. Some of them are very nice and well built.

Chassisnumbers:Here is a list with with chassisnumbers and the sources of the information we have collected sofar.

So up to now, the sources speak of:xx. more than 30 GTAm's that could be genuine?. a couple of chassisnumbers that pose questionmarks-. some chassisnumbers that could be or proved to be typo's accoording to Martinue's 'good and bad scan'.

Licenseplates:The following period licenseplates were found up to now:

I thought it was time to make a new compilation of the information that we have gathered so far (15th of August 2011).

Definition:
But first an addition to definition of what a GTAm is.
As already said the GTAm was an Alfa Romeo 1750 GTV that was converted by Autodelta to GTAm specification. The homologation papers specify what changes could be made.
Along with the type 1750 GTV USA (105.51) some type 1750 GTV EU (105.44) have also been converted (standing and hanging pedals).
The same goes for some type 2000 GTV’s (hanging pedals).
Besides that, UlrichGTA told me that in Germany some GT 1300 Junior cars have been converted to GTAm because the GT 1300 Junior was lighter.
Difficulty with the GTAm is, that it never had a unique type- and chassisnumber. This is unlike the type GTA (105.32 LHD and 105.34 RHD) and type GTA 1300 Junior (105.59).

Variants:
Then there are variants within the different types:
- new cars from the production line converted to GTAm spec's by Autodelta as Autodelta works cars
- new cars from the production line converted to GTAm spec's by Autodelta as Autodelta customer cars
- existing cars converted to GTAm spec's by Autodelta as Autodelta customer cars
- new or existing cars converted to GTAm spec's by other tuners/teams with a combination of Autodelta, Angelini, Balduzzi and other parts like the Balduzzi cars (Tony Adriaensens mentions this in his book)
- new or existing (replacement) bodyshells with or without a chassisnumber that were equipped with Autodelta, Angelini, Balduzzi and other parts (for example from wrecked cars)
- other variants on this theme in various stages of tune
On the bulletin board, there is a list of options for your GTAm. Have a look at post #9 in this thread: http://www.alfabb.com/bb/forums/giul...es-2-gtam.html

A lot of GTAm's will have been updated during and after their racing life, engines and gearboxes were swapped, they have been restored, etc ..... And some of these cars had great palmares while others were less fortunate.

Copies:
Besides that, there are a lot of copies with various stages of tune with less or more original GTAm parts. Have a look around on alfabb and you will see a lot of GTV's being changed into GTAm copies. Some of them are very nice and well built.

Chassisnumbers:
Here is a list with with chassisnumbers and the sources of the information we have collected sofar.

So up to now, the sources speak of:
xx. more than 30 GTAm's that could be genuine
?. a couple of chassisnumbers that pose questionmarks
-. some chassisnumbers that could be or proved to be typo's accoording to Martinue's 'good and bad scan'.

Licenseplates:
The following period licenseplates were found up to now:

Here is an update on the chassisnumbers of the Alfa Romeo 1750/2000 GTAm as of the 16th of October 2011.

Definition:But first an addition to definition of what a GTAm is. As already said the GTAm was an Alfa Romeo 1750 GTV that was converted by Autodelta to GTAm specification. The homologation papers specify what changes could be made. Along with the type 1750 GTV USA (105.51) some type 1750 GTV EU (105.44) have also been converted (standing and hanging pedals). The same goes for some type 2000 GTV’s (hanging pedals). Besides that, UlrichGTA told me that in Germany some GT 1300 Junior cars have been converted to GTAm because the GT 1300 Junior was lighter. Difficulty with the GTAm is, that it never had a unique type- and chassisnumber. This is unlike the type GTA (105.32 LHD and 105.34 RHD) and type GTA 1300 Junior (105.59).

Variants:Then there are variants within the different types: - new cars from the production line converted to GTAm spec's by Autodelta as Autodelta works cars- new cars from the production line converted to GTAm spec's by Autodelta as Autodelta customer cars- existing cars converted to GTAm spec's by Autodelta as Autodelta customer cars- new or existing cars converted to GTAm spec's by other tuners/teams with a combination of Autodelta, Angelini, Balduzzi and other parts like the Balduzzi cars (Tony Adriaensens mentions this in his book) - new or existing (replacement) bodyshells with or without a chassisnumber that were equipped with Autodelta, Angelini, Balduzzi and other parts (for example from wrecked cars) - other variants on this theme in various stages of tuneOn the bulletin board, there is a list of options for your GTAm. Have a look at post #9 in this thread: http://www.alfabb.com/bb/forums/giul...es-2-gtam.html

A lot of GTAm's will have been updated during and after their racing life, engines and gearboxes were swapped, they have been restored, etc ..... And some of these cars had great palmares while others were less fortunate.

Copies:Besides that, there are a lot of copies with various stages of tune with less or more original GTAm parts. Have a look around on alfabb and you will see a lot of GTV's being changed into GTAm copies. Some of them are very nice and well built.

Chassisnumbers:Here is a list with with chassisnumbers and the sources of the information we have collected sofar.

So up to now, the sources speak of:xx. more than 30 GTAm's that could be genuine?. a couple of chassisnumbers that pose questionmarks-. some chassisnumbers that could be or proved to be typo's accoording to Martinue's 'good and bad scan'.

Licenseplates:The following period licenseplates were found up to now:

The GTA (like many other cars) has been copied and cars then passed off as genuine. Certainly one Alfa specialist has produced a number of GTAs, and having had access to chassis records, has had the chassis numbers of "missing" cars reproduced by a jeweller as number / letter stamps are not available to stamp the correct height figures. These chassis numbers were formed on a shaped section of aluminium which was then welded into the correct place on the rear of the car.

The GTA (like many other cars) has been copied and cars then passed off as genuine. Certainly one Alfa specialist has produced a number of GTAs, and having had access to chassis records, has had the chassis numbers of "missing" cars reproduced by a jeweller as number / letter stamps are not available to stamp the correct height figures. These chassis numbers were formed on a shaped section of aluminium which was then welded into the correct place on the rear of the car.

I'm disclosed the above to assist / warn potential buyers.

MKJ

Dear MJK,

Thank you for the warning. I will be updating the GTAm chassisnumberlist as a new source of information has been available. This source is in the form of the second, 1456 page extended edition of the book `Alleggerita`. This book also contains loads of information on the GTA chassisnumbers which makes it possible to check the history. Further research will be needed to check if a specific GTA is genuine or not. `Alleggerita` will give you clues.

I thought it was time to make a new compilation of the information that we have gathered so far (02-02-2014). Thank you for all the members that contributed to this thread/database.

Definition:
But first an addition to definition of what a GTAm is.
As already said the GTAm was an Alfa Romeo 1750 GTV USA (105.51) that had Spica fuelinjection. It had two brake boosters and standing pedals. These cars were converted by Autodelta to GTAm specification. The homologation papers specify what changes could be made. Autodelta had a complete list of options to convert the car into a GTAm.
Along with the type 1750 GTV USA (105.51) some type 1750 GTV EU (105.44) have also been converted (standing and hanging pedals). The same goes for some type 2000 GTV’s (105.21) with hanging pedals.
Besides that, UlrichGTA told me that in Germany some GT 1300 Juniors (105.30) have been converted to GTAm because the GT 1300 Junior was lighter.
Difficulty with the GTAm is, that it never had a unique type- and chassisnumber. This is unlike the type GTA (105.32 LHD and 105.34 RHD) and type GTA 1300 Junior (105.59).

Variants:
There are variants within the different types:
- new cars from the production line converted to GTAm spec's by Autodelta SpA as Autodelta works cars
- new cars from the production line converted to GTAm spec's by Autodelta SpA as Autodelta customer cars
- existing cars converted to GTAm spec's by Autodelta SpA as Autodelta customer cars
- new or existing cars converted to GTAm spec's by other tuners/teams with a combination of Autodelta, Angelini, Balduzzi, Facetti and other parts like the `Balduzzi` cars (Tony Adriaensens mentions this in his book)
- new or existing (replacement) bodyshells with or without a chassisnumber that were equipped with Autodelta, Angelini, Balduzzi and other parts (for example from wrecked cars)
- other variants on this theme in various stages of tune

There is a list of Autodelta options for your 1750/2000 GTAm called "GTAm modifications & options for GTAm". Source of this info is the 1st edition of “Alleggerita” by Tony Adriaensens. In the 2nd edition of “Alleggerita” by Adriaensens, Dasse & Übelher, you will find a list and photographs of the parts that are specific to the GTAm (als well as to the Giulia Sprint GTA, GTA-SA and GTA 1300 Junior). This 2nd edition is a “must” for any GTA, GTA 1300 Junior, GTA-SA and 1750/2000 GTAm fan!

I doubt whether this list is fully complete.
What about a radiator (copper) expansion tank?
Special Autodelta works engines?
16 valve exhaust manifold?

I have to check the 2nd edition of “Alleggerita” for the list with options.

And what about other tuners such as Angelini with it's 2000cc 16 valve cylinderhead with Weber carburettors?
Further specifications can be found in the homologation papers.

A lot of GTAm's will have been updated during and after their racing life, engines and gearboxes were swapped, they have been restored, etc ..... And some of these cars had great palmares while others were less fortunate.

Copies:
Besides that, there are a lot of copies with various stages of tune with less or more original GTAm parts. Have a look around on alfabb and you will see a lot of GTV's being changed into GTAm copies. Some of them are very nice and well built.

Chassisnumbers:
Here is a list with with chassisnumbers and the sources of the information we have collected sofar. The latest list dates from 30-12-2013. This list is an updated and extended version of the earlier lists published here. Sources for this list are Maurizio Tabucchi (MT) in his book “Alfa Romeo GTA”, Adriaensens in his 1st edition of the book ”Alleggerita”, Adriaensens, Dasse & Übelher (A,D&Ü) in their 2nd edition of the book “Alleggerita”, members of this forum and my own research. The so called “bad scan” that is mentioned was a paper with errors that caused some misunderstandings concerning chassisnumbers.

Please remember that this list is far from complete when the history of the individual chassis is concerned. There simpy isn't enough room to add all that is known.
Please note that Adriaensens, Dasse & Übelher have added a lot of history to the individual chassisnumbers in the 2nd edition of "Alleggerita". More is to come, because A, D & Ü did not add history that could not be verified. For example #1530841 is one of the chassisnumbers with a lot of info to be added.

Furthermore, Tom Tanner made a list of colours belonging to the different chassisnumbers.